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Keywords: abacus hat beads indoor Me demonstrating that a single upper bead pressed against the cross bar represents the value 5. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. Me demonstrating that a single upper bead pressed against the cross bar represents the value 5. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. |